2129829917 has 2 divisors, whose sum is σ = 2129829918. Its totient is φ = 2129829916.

The previous prime is 2129829907. The next prime is 2129829931. The reversal of 2129829917 is 7199289212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972603396 + 157226521 = 44414^2 + 12539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129829917 - 2⁸ = 2129829661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129829907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064914958 + 1064914959.

It is an arithmetic number, because the mean of its divisors is an integer number (1064914959).

Almost surely, 2^2129829917 is an apocalyptic number.

It is an amenable number.

2129829917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129829917 is an equidigital number, since it uses as much as digits as its factorization.

2129829917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 50.

The square root of 2129829917 is about 46150.0803574598. The cubic root of 2129829917 is about 1286.6141035185.

It can be divided in two parts, 21298 and 29917, that added together give a palindrome (51215).

The spelling of 2129829917 in words is "two billion, one hundred twenty-nine million, eight hundred twenty-nine thousand, nine hundred seventeen".